9118889 has 4 divisors (see below), whose sum is σ = 9820356. Its totient is φ = 8417424.

The previous prime is 9118877. The next prime is 9118897. The reversal of 9118889 is 9888119.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9888119 = 547 ⋅18077.

It can be written as a sum of positive squares in 2 ways, for example, as 3736489 + 5382400 = 1933^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 9118889 - 2¹² = 9114793 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9118819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350714 + ... + 350739.

It is an arithmetic number, because the mean of its divisors is an integer number (2455089).

Almost surely, 2^9118889 is an apocalyptic number.

It is an amenable number.

9118889 is a deficient number, since it is larger than the sum of its proper divisors (701467).

9118889 is a wasteful number, since it uses less digits than its factorization.

9118889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701466.

The product of its digits is 41472, while the sum is 44.

The square root of 9118889 is about 3019.7498240748. The cubic root of 9118889 is about 208.9203011062.

The spelling of 9118889 in words is "nine million, one hundred eighteen thousand, eight hundred eighty-nine".